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Huada - Overhead Segmental Launching Gantry
Precast Segmental Method with a Segmental Launching Gantry (LG) is a very popular way used for the construction of bridges and viaducts with small curve and long span. Segmental Launching Gantries are used for erecting Precast Segmental Bridges and it uses Balance Cantilever Method or Span by Span Method. Launching Gantry can be designed as Underslung or Overhead Model to meet the site requirements.
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Overhead LG Innovations of Huada Heavy Industry:
- Our glue-as-you-go procedure is a special erection method for glued span-by-span bridges. A stiff main girder
- allows limited pre-loading of the LG. avoiding time consuming double handling.
- A symmetrical system allows turnaround of the LG without dismantling and re-erection. A special gantry
- crane, able to travel over hinges, combined with a 360 degree horizontal bearing on the bottom block, allows
- very flexible and smooth segment installation.
- Tower elements placed below the support beams allow substantial changes in the longitudinal slope. This
- facilitates compensation or elevation differences between neighboring bridges and repositioning of the LG in a
- vertical direction by vertical climbing of the LG.
- Easy extension of the support beam for overhead Launching Gantries makes sideways movement of the whole
- system to the neighboring bridge or over existing superstructures possible.